cells and living now

Question 1

MRS C GREN

Answer 1

movement, reproduction,sensitivity,control, growth,respiration,excretion,nutrition

Question 2

nutriton

Answer 2

to take in food for nutriton and energy

Question 3

respiration

Answer 3

realising energy

Question 4

movement

Answer 4

an action by an organism

Question 5

control

Answer 5

the ability to maintain their internal conditions

Question 6

reproduction

Answer 6

production of new organisms

Question 7

growth

Answer 7

increase in size and mass

Question 8

excrete

Answer 8

removal of waste

Question 9

sensitivity

Answer 9

detect changes in the surrounding

Question 10

what does a plant cell have that an animal cell doesn’t

Answer 10

chloroplast, vacuole, cell wall

Question 11

levels of organisation

Answer 11

cells -> Tissues -> organs -> Organ system -> organism

Question 12

what is a eukaryotic cell?

Answer 12

multicellular organisms e.g. plants and animals are formed from eukaryotic cells.

Question 13

what is a prokaryotic cell?

Answer 13

e.g. bacteria do not have nuclei and contain only the most simple organelles.

Question 14

cytoplasm

Answer 14

where most of the chemical reactions happen

Question 15

nucleus

Answer 15

contains genetic material which controls the cells activities

Question 16

cell membrane

Answer 16

controls the movement of substances in and out of the cell

Question 17

mitochondria

Answer 17

where most energy os released in respiration

Question 18

ribosomes

Answer 18

where protein synthesis happens

Question 19

chloroplast (plant cell)

Answer 19

absorbs light energy for photosynthesis

Question 20

cell wall (plant cell)

Answer 20

strengthens the cell and supports the paint

Question 21

permanent vacuole (plant cell)

Answer 21

filled with cell sap to help keep the cell turgid.

Question 22

organ

Answer 22

a structure made up of a group of tissues working tougher to preform body functions

Question 23

organ system

Answer 23

a group of organs with related functions, working together to preform body functions

Question 24

organelle

Answer 24

a structure within the cell

Question 25

organism

Answer 25

a living thing

Question 26

tissue

Answer 26

a group of cells with similar structures working together to preform specific functions

Question 27

photosynthesis

Answer 27

the fundamental process by which plants manufacture carbohydrates from raw materials using energy from light.

Question 28

root hair cell (specialised)

Answer 28

plant roots have many of these. elongated section increases surface area to absorb water

Question 29

chlorphyll

Answer 29

a green, light-absorbing pigment found inside chloroplasts in plant cells

Question 30

chloroplast

Answer 30

an organelle found in some plant cells, which contains chlorophyll and where photosynthesis takes place

Question 31

concentration gradient

Answer 31

a difference in the concentration if molecules in different regions. molecules may more passively down this gradient to reach equilibrium

Question 31

cell sap

Answer 31

a solution of sugars and other substances inside the vacuole of a plant cell

Question 32

active transport

Answer 32

the moment of particles in or out of a cell through the cell membrane, from a region of their lower concentration to a region of their higher concentration against a concentration gradient using energy released during respiration.

Question 33

diffusion

Answer 33

the net movement of particles from a region of their higher concentration to a region of their lower concentration down a concentration gradient.

Question 34

cellulose

Answer 34

a polysaccharide carbohydrates which forms fibres and is found in the cell walls of plants

Question 34

osmosis

Answer 34

the diffusion of water molecules from a region of their higher concentration to a region of their lower concentration through a selectively permeable membrane.

Question 35

flaccid

Answer 35

a cell that has lost a lot of water, becoming soft

Question 36

turgid cell

Answer 36

a plant cell that has absorbed water and has cytoplasm that is pressing outward on the cell wall

Question 37

animals

Answer 37

multicellular organisms

Question 38

bacteria

Answer 38

single-celled organisms many are harmless and beneficial, some are pathogens .

Question 39

fungi

Answer 39

organisms that reproduce by spores or budding and live as parasites for example moulds, yeasts and mushrooms, they possess cell walls made form chitin

Question 39

pathogen

Answer 39

a micro-organisme

Question 40

plants

Answer 40

multicellular organisms which possess cellulose cell walls, they obtains energy by photosynthesis

Question 41

protoctists

Answer 41

unicellular organisms considered separate from fungi, plants and animals, but which have features shared with the animal plant kingdoms

Question 42

viruses

Answer 42

parasites consisting of DNA core surrounded by a protein coat, not considered to be living